How do you compute fat-free weight?

To compute fat-free weight, it is essential to understand the components of total body weight. Fat-free weight is determined by subtracting the weight of the fat from the total body weight. Essentially, it reflects all the weight in the body that is not attributable to fat mass, which includes muscle, bones, organs, and water.

By calculating the percentage of body fat and then using it to find out how much of the total body weight consists of fat, you can subtract that fat weight from the total body weight. This gives the fat-free weight, which is useful for assessing body composition and fitness levels.

For instance, if a person weighs 200 pounds and has a body fat percentage of 25%, you would first calculate the fat weight as 25% of 200 pounds, which is 50 pounds. Subtracting this from the total body weight of 200 pounds results in a fat-free weight of 150 pounds. Thus, option C correctly states the mathematical approach needed to compute fat-free weight.